Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K9YCA callsign genealogy
Currently held by SUMPTION, JAMES A
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by K9YCA's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held K9YCA.
- SUMPTION, JAMES AINgranted 2019-04-12